Computer display panel with a graphical user interface



FIG. 1 is a front view of a first embodiment of the computer display panel with a graphical user interface showing my design thereof; and,

FIG. 2 is a front view of a second embodiment of the computer display panel with a graphical user interface showing my design thereof.

The broken lines depicting the display and portions of the graphical user interface form no part of the claimed design. 

CLAIM The ornamental design for a computer display panel with a graphical user interface, as shown and described. 